if (userid != null && password != null) { login(telnet); } /** Process each sub command */ Enumeration tasksToRun = telnetTasks.elements(); while (tasksToRun != null && tasksToRun.hasMoreElements()) { TelnetSubTask task = (TelnetSubTask) tasksToRun.nextElement(); if (task instanceof TelnetRead && defaultTimeout != null) { ((TelnetRead) task).setDefaultTimeout(defaultTimeout); } task.execute(telnet); }
if (userid != null && password != null) { login(rexec); } /** Process each sub command */ Enumeration tasksToRun = rexecTasks.elements(); while (tasksToRun != null && tasksToRun.hasMoreElements()) { RExecSubTask task = (RExecSubTask) tasksToRun.nextElement(); if (task instanceof RExecRead && defaultTimeout != null) { ((RExecRead) task).setDefaultTimeout(defaultTimeout); } task.execute(rexec); }
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/net/TelnetTask.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/net/RExecTask.java
Method name: void execute() Method name: void handleMultipleTasks(AntRExecClient)
Number of AST nodes: 8 Number of AST nodes: 8
1
if (userid != null && password != null) {
1
if (userid != null && password != null) {
2
               login(telnet);
2
            login(rexec);
3
           }
3
        }
4
           /**  Process each sub command */
4
        /**  Process each sub command */
5
           Enumeration tasksToRun = telnetTasks.elements();
5
        Enumeration tasksToRun = rexecTasks.elements();
6
           while (tasksToRun != null && tasksToRun.hasMoreElements()) {
6
        while (tasksToRun != null && tasksToRun.hasMoreElements()) {
7
               TelnetSubTask task = (TelnetSubTask) tasksToRun.nextElement();
7
            RExecSubTask task = (RExecSubTask) tasksToRun.nextElement();
8
               if (task instanceof TelnetRead && defaultTimeout != null) {
8
            if (task instanceof RExecRead && defaultTimeout != null) {
9
                   ((TelnetRead) task).setDefaultTimeout(defaultTimeout);
9
                ((RExecRead) task).setDefaultTimeout(defaultTimeout);
10
               }
10
            
11
   
11
}
12
            task.execute(telnet);
12
            task.execute(
13
   
13
rexec);
14
        }
14
        }
Summary
Number of common nesting structure subtrees1
Number of refactorable cases0
Number of non-refactorable cases1
Time elapsed for finding largest common nesting structure subtrees (ms)0.5
Clones locationClones are in different classes having the same super class
Number of node comparisons18
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements7
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)4.8
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    12
    if (userid != null && password != null)
    1
    if (userid != null && password != null)
    13
    login(telnet);
    13
    login(telnet);
    2
    login(rexec);
    Differences
    Expression1Expression2Difference
    telnetrexecVARIABLE_NAME_MISMATCH
    org.apache.tools.ant.taskdefs.optional.net.TelnetTask.AntTelnetClientorg.apache.tools.ant.taskdefs.optional.net.RExecTask.AntRExecClientSUBCLASS_TYPE_MISMATCH
    Preondition Violations
    Expression telnet cannot be unified with expression rexec , because common superclass type org.apache.commons.net.SocketClient cannot be passed as an argument to private void login(org.apache.tools.ant.taskdefs.optional.net.TelnetTask.AntTelnetClient)
    2
    login(rexec);
    14
    Enumeration tasksToRun = telnetTasks.elements();
    14
    Enumeration tasksToRun = telnetTasks.elements();
    3
    Enumeration tasksToRun = rexecTasks.elements();
    Differences
    Expression1Expression2Difference
    telnetTasksrexecTasksVARIABLE_NAME_MISMATCH
    3
    Enumeration tasksToRun = rexecTasks.elements();
    15
    while (tasksToRun != null && tasksToRun.hasMoreElements())
    4
    while (tasksToRun != null && tasksToRun.hasMoreElements())
                                                                                                                            
    5
    RExecSubTask task = (RExecSubTask)tasksToRun.nextElement();
    Preondition Violations
    Unmatched statement RExecSubTask task=(RExecSubTask)tasksToRun.nextElement(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    5
    RExecSubTask task = (RExecSubTask)tasksToRun.nextElement();
    16
    TelnetSubTask task = (TelnetSubTask)tasksToRun.nextElement();
    16
    TelnetSubTask task = (TelnetSubTask)tasksToRun.nextElement();
    Preondition Violations
    Unmatched statement TelnetSubTask task=(TelnetSubTask)tasksToRun.nextElement(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
                                                                                                                                  
    17
    if (task instanceof TelnetRead && defaultTimeout != null)
    17
    if (task instanceof TelnetRead && defaultTimeout != null)
    6
    if (task instanceof RExecRead && defaultTimeout != null)
    Differences
    Expression1Expression2Difference
    org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTaskorg.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTaskVARIABLE_TYPE_MISMATCH
    org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetReadorg.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecReadVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask of variable task does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask of variable task
    • Make classes org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask and org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask extend a common superclass
    Expression task instanceof TelnetRead cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression task instanceof RExecRead cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetRead does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecRead
    • Make classes org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetRead and org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecRead extend a common superclass
    6
    if (task instanceof RExecRead && defaultTimeout != null)
    18
    ((TelnetRead)task).setDefaultTimeout(defaultTimeout);
    18
    ((TelnetRead)task).setDefaultTimeout(defaultTimeout);
    7
    ((RExecRead)task).setDefaultTimeout(defaultTimeout);
    Differences
    Expression1Expression2Difference
    org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetReadorg.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecReadVARIABLE_TYPE_MISMATCH
    org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTaskorg.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTaskVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Expression (TelnetRead)task cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression (RExecRead)task cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetRead does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecRead
    • Make classes org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetRead and org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecRead extend a common superclass
    Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask of variable task does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask of variable task
    • Make classes org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask and org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask extend a common superclass
    7
    ((RExecRead)task).setDefaultTimeout(defaultTimeout);
    19
    task.execute(telnet);
    19
    task.execute(telnet);
    8
    task.execute(rexec);
    Differences
    Expression1Expression2Difference
    telnetrexecVARIABLE_NAME_MISMATCH
    org.apache.tools.ant.taskdefs.optional.net.TelnetTask.AntTelnetClientorg.apache.tools.ant.taskdefs.optional.net.RExecTask.AntRExecClientSUBCLASS_TYPE_MISMATCH
    org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTaskorg.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTaskVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Expression telnet cannot be unified with expression rexec , because common superclass type org.apache.commons.net.SocketClient cannot be passed as an argument to public void execute(org.apache.tools.ant.taskdefs.optional.net.TelnetTask.AntTelnetClient) throws org.apache.tools.ant.BuildException
    Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask of variable task does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask of variable task
    • Make classes org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask and org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask extend a common superclass
    8
    task.execute(rexec);
    Precondition Violations (13)
    Row Violation
    1Expression telnet cannot be unified with expression rexec , because common superclass type org.apache.commons.net.SocketClient cannot be passed as an argument to private void login(org.apache.tools.ant.taskdefs.optional.net.TelnetTask.AntTelnetClient)
    2Unmatched statement RExecSubTask task=(RExecSubTask)tasksToRun.nextElement(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    3Unmatched statement TelnetSubTask task=(TelnetSubTask)tasksToRun.nextElement(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    4Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask of variable task does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask of variable task
    5Expression task instanceof TelnetRead cannot be parameterized, because it has dependencies to/from statements that will be extracted
    6Expression task instanceof RExecRead cannot be parameterized, because it has dependencies to/from statements that will be extracted
    7Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetRead does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecRead
    8Expression (TelnetRead)task cannot be parameterized, because it has dependencies to/from statements that will be extracted
    9Expression (RExecRead)task cannot be parameterized, because it has dependencies to/from statements that will be extracted
    10Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetRead does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecRead
    11Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask of variable task does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask of variable task
    12Expression telnet cannot be unified with expression rexec , because common superclass type org.apache.commons.net.SocketClient cannot be passed as an argument to public void execute(org.apache.tools.ant.taskdefs.optional.net.TelnetTask.AntTelnetClient) throws org.apache.tools.ant.BuildException
    13Type org.apache.tools.ant.taskdefs.optional.net.TelnetTask.TelnetSubTask of variable task does not match with type org.apache.tools.ant.taskdefs.optional.net.RExecTask.RExecSubTask of variable task